Oracle Database 19c Administration

1. Multitenant Architecture: Oracle Database 19c introduces a multitenant architecture that allows multiple pluggable databases (PDBs) to be consolidated within a single container database (CDB). This feature simplifies management, reduces resource consumption, and improves efficiency.

2. Automatic Indexing: Oracle Database 19c introduces Automatic Indexing, which uses machine learning algorithms to automatically create and manage indexes based on workload patterns. This feature improves query performance and reduces manual index management efforts.

3. High Availability Enhancements: Oracle Database 19c includes enhancements to high availability features such as Oracle Real Application Clusters (RAC), Oracle Data Guard, and Oracle Automatic Storage Management (ASM). These enhancements improve resilience, scalability, and disaster recovery capabilities.

4. Database In-Memory: Oracle Database 19c includes enhancements to the Database In-Memory feature, which enables faster query performance by storing frequently accessed data in memory. This feature improves analytical and reporting workloads by reducing query response times.

5. JSON Data Type Support: Oracle Database 19c introduces native support for JSON (JavaScript Object Notation) data types, allowing users to store, query, and manipulate JSON documents directly within the database. This feature simplifies development and integration of applications that use JSON data.

Before learning Oracle Database 19c Administration, you should ideally have the following skills:

1. Database Fundamentals: Understand basic concepts of databases, including data modeling, SQL queries, database design, and normalization.

2. Oracle Database Basics: Familiarity with Oracle Database architecture, components, and functionality, including tablespaces, data files, redo logs, and control files.

3. SQL and PL/SQL: Proficiency in writing and executing SQL queries and PL/SQL code for data manipulation, querying, and stored procedures.

4. Operating System Knowledge: Basic understanding of the operating system (Linux, Windows, etc.) on which Oracle Database is installed, including file system navigation, user management, and basic system administration tasks.

5. Database Installation and Configuration: Ability to install and configure Oracle Database software, including setting up initialization parameters, creating database instances, and configuring network settings.

By learning Oracle Database 19c Administration, you gain the following skills:

1. Database Installation and Configuration: Ability to install, configure, and manage Oracle Database 19c instances on different operating systems.

2. Database Monitoring and Management: Skills in monitoring database performance, managing storage, and administering user accounts and privileges.

3. Backup and Recovery: Proficiency in implementing backup and recovery strategies using tools like RMAN (Recovery Manager) and Oracle Data Pump.

4. Security Management: Knowledge of implementing security measures such as user authentication, encryption, and access control to protect data integrity and confidentiality.

5. Performance Tuning: Ability to optimize database performance through SQL tuning, indexing strategies, memory management, and query optimization techniques.